Answer:
What has 3 feet but cannot walk?
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.
My life can be measured in hours, I serve by being devoured. Thin, I am quick. Fat, I am slow. Wind is my foe.
He has one and a person has two. A citizen has three. And a human being has four. A personality has five. And an inhabitant of earth has six.
I'm a god. I'm a planet. I measure heat.
What did the piece of wood say when he saw the screwdriver and screws approaching?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?